新热带洪泛区非洄游鱼类元群落模式:地方机制、区域尺度和水文动态

IF 2.5 3区 环境科学与生态学 Q2 ECOLOGY
Ecohydrology Pub Date : 2024-09-03 DOI:10.1002/eco.2706
Patricia Almeida Sacramento, Nadson Ressyé Simões, Gustavo Henrique Zaia Alves, Sidineia Amadio, Andre Andrian Padial, Evanilde Benedito
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引用次数: 0

摘要

生物群落的空间分布可能受环境和空间过程的调控,这些过程的强度取决于物种特征、空间异质性和空间范围。我们利用方差分配程序研究了非洄游鱼类元群落与环境和空间变量之间的关系。我们使用了来自四个新热带洪泛平原湖泊的数据:亚马逊、阿拉瓜亚、潘塔纳尔和巴拉那。我们假设,洪泛平原系统中非洄游鱼类空间分布的驱动过程取决于洪水脉冲驱动的连通性。我们预测,在没有扩散限制的雨季,空间变量对解释鱼类群落结构的重要性较低。相反,环境变量会影响雨季和旱季的鱼类群落结构。在干旱期,元群落取决于物种的扩散能力,但在多雨和干旱期,空间分布取决于每个物种选择的环境过滤器。就大多数环境变量而言,雨季的相似性更高。我们的研究结果表明,四个洪泛平原系统的湖泊中鱼类群落的模式各不相同,因此我们否定了我们的假设。非洄游鱼类会留在其出生地的环境中,只进行小规模的横向移动。在这种情况下,我们发现空间变量对两个时期的影响都很小,而环境变量对亚马逊(16%)和潘塔纳尔(32%)洪泛平原雨季鱼类分布结构的影响很大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Patterns of non‐migratory fish metacommunity from Neotropical floodplains: Local mechanisms, regional scale and hydrological dynamics
The spatial distribution of biological communities may be regulated by environmental and spatial processes, and the intensity of these processes depend on the species characteristics, spatial heterogeneity and spatial extent. We investigated the relationship between the non‐migratory fish metacommunity with environmental and spatial variables using the variance partitioning procedure. We used data from lakes of four Neotropical floodplains: Amazon, Araguaia, Pantanal and Paraná. We hypothesised that the processes that drive the spatial distribution of non‐migratory fish in floodplain systems depend on connectivity driven by flood pulse. We predict that spatial variables are less important to explaining the fish community structures during rainy periods when there is no dispersal limitation. In contrast, environmental variables influence these structures during rainy and dry periods. During dry periods, metacommunities depend on species' dispersal abilities, but during rainy and dry periods, spatial distribution depends on the environmental filters selected by each species. For most of the environmental variables, it was possible to observe more similarity in the rainy period. Our results showed different patterns of fish communities for the lakes of the four floodplains systems, which led us to reject our hypothesis. Non‐migratory fish remain in their natal environment and perform only small lateral movements. In this scenario, we found a little influence from spatial variables in both periods and a great contribution of environmental variables for Amazon (16%) and Pantanal (32%) floodplains in structuring fishes' distribution in the rainy period.
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来源期刊
Ecohydrology
Ecohydrology 环境科学-生态学
CiteScore
5.10
自引率
7.70%
发文量
116
审稿时长
24 months
期刊介绍: Ecohydrology is an international journal publishing original scientific and review papers that aim to improve understanding of processes at the interface between ecology and hydrology and associated applications related to environmental management. Ecohydrology seeks to increase interdisciplinary insights by placing particular emphasis on interactions and associated feedbacks in both space and time between ecological systems and the hydrological cycle. Research contributions are solicited from disciplines focusing on the physical, ecological, biological, biogeochemical, geomorphological, drainage basin, mathematical and methodological aspects of ecohydrology. Research in both terrestrial and aquatic systems is of interest provided it explicitly links ecological systems and the hydrologic cycle; research such as aquatic ecological, channel engineering, or ecological or hydrological modelling is less appropriate for the journal unless it specifically addresses the criteria above. Manuscripts describing individual case studies are of interest in cases where broader insights are discussed beyond site- and species-specific results.
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